"Maybe they'll come back to you if you sing it or teach me, though you could always improvise and add your own lyrics," Piper said. Both made sense to him anyway. Of course, it might not to her, or it might not even help for all he knew. "If you do not remember, however, please do not feel obliged to teach me," he added with a smile. It was a nice gesture, after all, and that meant just as much to him right then as her actually teaching him would.